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Have just updated to Big Sur on iMac but now cannot unlock with Apple watch (series 5). Advice please.
I had the same issue with Apple Watch 6 (watchOS 7.1) and MacBook Pro 13 early 2015 (Big Sur). So I repaired it with some steps:
1) I disabled Keychain synchronisation on MacBook (Settings/iCloud/Keychain)
2) I made steps in this thread https://discussions.apple.com/thread/251803595?answerId=253458029022#253458029022
3) Disconnected Watch from iPhone
4) Connected back Watch to iPhone (set it from backup)
5) Restarted MacBook
6) Turned on Keychain in iCloud settings
7) Enabled Auto Unlock for Watch in System Prefs
I've tried many different ways to fix this same problem, but bartlomiej has had the ONLY fix that has worked. THANK YOU!!!
Still won't work with Big Sur 11.1 and a Series 4 watch with watchOS7.2
I fixed problem with Big Sur updating problem but I just updated my MacBook Pro to Big Sur 11.1 then did not unlock again!!
Big Sur 11.1 on a MacBook Pro and Series 4 watchOS 7.2. After the updates, did restarts on both. No luck. Restarted both MacBook and watch a few hours later and now watch unlocks MacBook.
Complicated but it worked the second time after rebooting all my devices.
Was all working perfectly for me UNTIL installing 11.1 this morning - now not working at all. FFS apple...
I resolved this by going into System Preferences > Security & Privacy, turn off Apple Watch unlock, restart laptop, then return to enable Apple Watch unlock. Voila ! It is working again.
That works for me too, until someone else logs onto the same computer. That breaks the chain and it has been this way ever since I've had my MacBook Pro.
Surprised no one else thought of that. Or maybe that didn’t work for them, so they’re looking for a solution to it not working?
Fantastic, worked like a charm, thank you
All these methods work until a second person logs into the computer. After that, nothing works.
Big Sur - Unlocking with Apple Watch
